Vulnérabilités / CVE-2026-34582

critique

CVE-2026-34582

botan: Botan: Client authentication bypass in TLS 1.3 implementation

Publiée Modifiée CWE 841, 166
Dans la Trivy database depuis au moins le 24 oct. 2026, 07:11 UTCLa date d'entrée avant ce build n'est pas enregistrée.

Sévérité par source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Red Hat9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Le label propre à Trivy est CRITICAL. Critique selon NVD. Plus basse selon Red Hat (élevée).

Description

Botan is a C++ cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being received. A server which is attempting to enforce client authentication via certificates can by bypassed by a client which entirely omits Certificate, CertificateVerify, and the Finished message and instead sends application data records. This vulnerability is fixed in 3.11.1.

Paquets affectés et versions corrigées

SourcePaquetCorrigé en
alpine 3.24botan33.11.1-r0
alpine edgebotan33.11.1-r0
debian 13botan33.11.0+dfsg-2
debian 14botan33.11.0+dfsg-2
echobotan33.11.0+dfsg-2
rapidfort debian 12botan30:3.11.0+dfsg-2
rapidfort debian 13botan30:3.11.0+dfsg-2

Références

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.